Bale of fibrous materials.



IATENTEB 523.. 39, 1907.

L. 90mm. BALELflEEIBRGUS MATERIALS.

APlLIkliTIOR FILED MAR. 21, 1803.

WITNESSES:

W a iNVENTOR Mm AUOHNEY$ rm: "can: Pill cor, umsmuaron, 04 c HARRY L.DUNCAN, OF NEW YORK, Y.

BALE OF FIBROUS MATEFHALS.

Specification of Letters Patent,

Patented April 30, 1907.

Application tiled March 2i, i903. Srrinl No, l ls filtL 1b (1/! whom itnttty concern.-

Be it known that I, HARRY L. DUNCAN, a citizen of the United States, anda resident of Now York city, in the county of Kings and Stain ol \cwYork, have invented rcrtnin new and useful Improvements Relating toBales of Fibrous Material, of which the follll\\lll f is aspecification. lulu-n in connecti n ith lllt' accompanyiup drawing,showing in prrspcrtive an illustrative embodiment all the same.

This invention relates to bales formed of fibrous material composed ofhelical layers compressed together to form a substantially cylindricalbale.

in the illustrative embodiment of this invention shown in the drawingthe halo is formed of layers of material having a. substantiallyparabolic section, the nested layers being compressed together in such away as to form a coherent or self binding baleB. The section of one ofthese bales is indicated in the drawing as D, the layer being shown inthe compressed condition in which it exists within the completed bale,but separated somewhat from the adjacent layer in order to indicate thestructure more clearly. As

is seen, both the upper edge E and the lower t edge F are substantiallyparabolic with relation to the axis A, and the axial thickness of thelayer, that is, the thickness in a direction parallel to the axis of thebale, is the same at the center as at the circumference of the hole. Abale of this description may be formed by winding one or more helicalribbons or layers having such an inclmcd l curved section and would becoherent or sell-binding the same as the bhinkcl or conyolutionallywound bale by reason of the layers of compressed malt-rial nvslinglogethcr. The external portions of such a hair near the circumlcrcm'care nearly parallel to the axis so that radial expansion ol' the lmaterial ol the bale is resisted by thc cir cumlerentinl strength oi thematerial and furthermore, longitudinal expansion after the bale is onceformed is prevented by the frictional engagement of the adjacent layersdue to the radial pressure between them! By giving the layers of thebale a varying cross-section so that the axial portion (1 of each layeris more nearly perpendicular to the axis than that portion of the layerlocated farther from the axis and nearer the circumference oi the bale,which may bc door by forming the layers with tlu' curved crosssectionindiralcd, the cxccssivo radial pressure which exists in the blankethole is prevented. The portion of the bale near the axis is thusl'oruirtl l laycrs arranged at u ullirit-nt airll t rtnaxis so that hima terial docs not cxrcssiwty coin )rcss [hr central or axial portion ofthe hole, but on the c ntrary. thu r iulllll'll layers Iltzll th a\isresist Ihc radial pll urc cxcrtcd upon them by the comprrssrd ullitlportions of the halo and a more dcsirabhdistribution oi the matcrial issecured throughout the various parts of the halo.

lly forming a bat ol' material of regulated thickness so that the amountof material in the various parts of the bat along its width areregulated the proper distribution of material throughout the variousportions of the halo is secured. Any desired number of bats oi thischaracter may be led to the protruding curved end oi the forming haloand continuously compressed against it, the shape of the protrudingreduced end which projects from the cylindrical body of the halo beingmaintained constant as the helical convolutions are continuously appliedto it and compressed upon the material already in the halo. Each hat ofmaterial is preferably continuous and positively fed in a radialdirection, although it may be fed to the pro truding end of the forminghole at a suitable inclination and this may be accomplished bypositively feeding such bat of material into the slot of a paraboloidalcap plate which incloscs the protruding cud oi the bale and serves tocompress the material against it. The bale is rotated relatively to thecap plate and its axial movement away from the cap plate is alsopreferably positively regulated so as to produce the dcsircd densitywithin the halo. By suitably rcgula-ting the thickncss ol' the bat carhhiycr oi the bahnmy bc formed oi unil'orm dcnsity from rcnlcr tocirrulnl'crcnrc and by suitably rcgulating' the axial morcnu-nt of thebah the density of the material in the scvcrnl layers may bc madeuniform. if desired, however, any other prcfcrrcd distrilmtion of thcnmtcrinl in the various Jarts oi the bale may be made. A cylindricalbale ol' this character may bc produccd by employing, the apparatusdisrloscd in the pntcnt to Duncan, (371191, of )ril lli, Will, and thecylindrical bnhmay, ol course, be scrcrcd into lengths and bound withwires and otherwise covered and pro pared lor shipment.

The inclination of the layers of the bale can, of course, be varied andthe sha e of the layer section can be modified by tiose familiar withthis art. Furthermore, other changes may be made in the form, proortions and numbers of elements of wiieh these bales are composedwithout departing from the spirit of this invention. 1 do not,therefore, wish to be lim ted to the details of the disclosure which hasbeen made in this case,but

What I claim as new and what I desire to secure by Letters Paton! is setforth in the appended claims 1. A cylindrical bale of substantiallyuniform density formed of nested helical layers having a substantiall}parabolic eross-seetion.

2. A cylindrical bale formed of nested layers having a substantiallyparabolic crosssection.

' 3. A cylindrical baie composed of nested layers having a substantiallyparabolic cross-section each layer having a substantially uniformdensity from center to cireumference.

4. A cylindrical hale composed of nested layers having a varyingcross-section, the portions of said layers adjacent the axis of the balebeing more nearly perpendicular to said axis than portions more remotefrom said axis.

5. A cylindrical bale composed of nested layers, each having asubstantially uniform density [rum ('enlel' lo (llCUllllllflK'P, saidlayers having a rul'red eross'seetion and the portions of said layersadjacent the axis of the bale forming a greater angle therewith thanportions more remote from said axis.

llAliltY L. DUNCAN.

Witnesses:

JESSIE B. KAY, ALEXANDER MITCHELL.

